Mathematical Model Establishment and Analysis on the Pipe Deformation under External Pressure with the Ovality

Abstract:

Beside the residual stresses and axial loads, other factors of pipe like ovality, moment could also bring a significant influence on pipe deformation under external pressure. The Standard of API-5C3 has discussed the influences of deformation caused by yield strength of pipe, pipe diameter and pipe thickness, but the factor of ovality degree is not included. Experiments and numerical simulations show that with the increasing of pipe ovality degree, the anti-deformation capability under external pressure will become lower, and ovality affecting the stability of pipe shape under external pressure is significant. So it could be a path to find out the mechanics relationship between ovality and pipe deformation under external pressure by the methods of numerical simulations and theoretical analysis.

• Periodical: Advanced Materials Research (Volumes 760-762)
• Pages: 2263-2266
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.760-762.2263
• Online since: September 2013
• Authors: Kang Yong, Wei Chen
• Keywords: Deformation, External Pressure, Mathematical Models, Ovality, Pipe

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